Contact: Leila Gray
University of Washington
Caption: Stem-cell derived heart muscle cells were genetically labeled with fluorescent calcium to flash when they contract. By correlating this optical signal from the graft cells with an electrocardiogram -- electrical signals from a recipient's heart -- researchers determined that transplanted human heart cell grafts electrically coupled with the recipient's own heart muscle.
Credit: Michael Laflamme and Charles Murry, University of Washington
Usage Restrictions: For use only by news media, museums and educational institutions.
Related news release: Heart muscle cell grafts suppress arrhythmias after heart attacks in animal study